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35 lines
907 B
Nim
35 lines
907 B
Nim
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import
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stew/byteutils,
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nimcrypto/[hash, keccak],
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trie_defs
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template checkValidHashZ*(x: untyped) =
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when x.type isnot KeccakHash:
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doAssert(x.len == 32 or x.len == 0)
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template isZeroHash*(x: openArray[byte]): bool =
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x.len == 0
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proc hashFromHex*(bits: static[int], input: string): MDigest[bits] =
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MDigest(data: hexToByteArray[bits div 8](input))
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template hashFromHex*(s: static[string]): untyped = hashFromHex(s.len * 4, s)
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proc keccakHash*(input: openArray[byte]): KeccakHash =
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keccak256.digest(input)
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proc keccakHash*(dest: var openArray[byte], a, b: openArray[byte]) =
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var ctx: keccak256
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ctx.init()
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if a.len != 0:
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ctx.update(a[0].unsafeAddr, uint(a.len))
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if b.len != 0:
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ctx.update(b[0].unsafeAddr, uint(b.len))
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ctx.finish dest
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ctx.clear()
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proc keccakHash*(a, b: openArray[byte]): KeccakHash =
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var s: array[32, byte]
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keccakHash(s, a, b)
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KeccakHash(data: s)
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